Bordertown Weather in January (1981–2025)

📍 36.31°S, 140.77°E •
📊

January at a Glance in Bordertown

(1981–2025)
Avg High
🔥
30.9°C
Avg Low
❄️
14.1°C
Avg Temp
🌡️
22.5°C
Avg Rain
🌧️
21 mm
Avg Humidity
💧
47%
Avg Wind
🌬️
3.8 m/s
Avg Solar
☀️
7.6
kWh/m²/day
vs Annual
📈
+6.7°C
temp difference
🌡️Warm afternoons🌤️Cool mornings☀️Very sunny🌦️Some rain💨Breezy🏜️Low humidity

Bordertown January Weather Overview

January is one of the warmer months of the year in Bordertown, with average highs near 30.9°C and lows around 14.1°C (mean 22.5°C). It is one of the drier months, averaging 21 mm of rainfall and 47% relative humidity across the period.

Bordertown January Temperature History (1981–2025)

Range

January is one of the warmer months of the year in Bordertown. Across 45 years of records, the warmest January in Bordertown was 2001 — when the month averaged 26°C — while the coldest was 2004 at 18.5°C. Typical January days reach 30.9°C with nights near 14.1°C. The long-term trend is warming, about 0.5°C per decade.

1981–1985 vs 2021–2025

Avg Temp22.2°C→23.5°C+1.3°C
Max Temp30.6°C→31.8°C+1.2°C
Min Temp13.7°C→15.2°C+1.5°C

Trend (per decade)

Avg Temp+0.5°C/decade ↗
Max Temp+0.5°C/decade ↗
Min Temp+0.5°C/decade ↗

Distribution of Avg Temp

18.0°C–20.0°C4 yr (9%)
20.0°C–22.0°C8 yr (18%)
22.0°C–24.0°C24 yr (53%)
24.0°C–26.0°C9 yr (20%)

Bordertown January Rainfall History (1981–2025)

Range

January is one of the drier months in Bordertown, averaging 21 mm of rainfall. The wettest January on record was 2007 with 73 mm, while the driest were 2009 and 2018 at 2 mm.

Bordertown January Humidity History (1981–2025)

Range

Relative humidity in Bordertown during January averages 47%. The most humid January was 2011 at 57%, and the least humid was 1981 at 40%.

Bordertown January Solar History (1981–2025)

Range

January receives about 7.6 kWh/m²/day of solar energy in Bordertown. The sunniest January was 2009 at 8.5 kWh/m²/day, and the cloudiest was 2002 at 6.9.

Bordertown January Wind History (1981–2025)

Range

Average wind speed in Bordertown during January is 3.8 m/s. The windiest January was 2012 at 4.3 m/s, while the calmest was 2011 at 3.1 m/s.

What January Feels Like in Bordertown

🌅
Cool
Morning
🌞
Warm
Afternoon
🌆
Mild
Evening
Rain chanceLow
Outdoor comfort★★★★★

How January Ranks in Bordertown

🔥1st warmest month of the year
🌵2nd driest month of the year
☀️1st sunniest month of the year

Ranked against the other 11 months using 1981–2025 averages.

Explore Bordertown Weather by Month

Bordertown January Averages by Decade

Metric1980s1990s2000s2010s2020sChange
Avg Temp21.7°C22.1°C22.4°C23.4°C23.3°C+1.6°C
Avg High30.1°C30.3°C30.7°C31.8°C31.6°C+1.5°C
Avg Low13.3°C13.8°C14.0°C14.9°C15.0°C+1.7°C
Avg Rain15 mm22 mm20 mm21 mm29 mm+13 mm

Extreme January Records in Bordertown

🔥Warmest January45.8°C2003
🧊Coldest January6.9°C1987
🌧️Wettest January73 mm2007
🏜️Driest January2 mm2009
🌬️Windiest January4.3 m/s2012

Key Insights for January

✅

January temperatures in Bordertown have risen by about 1.3°C between 1981–1985 and 2021–2025.

✅

January has ranged from a record low of 6.9°C (1987) to a record high of 45.8°C (2003).

✅

Rainfall in January is one of the drier months, averaging 21 mm, with a wettest year of 73 mm.

Is January a Good Time to Visit Bordertown?

One of the best times to visit Bordertown

January is one of the best times to visit Bordertown. Expect days averaging 30.9°C and nights around 14.1°C (mean 22.5°C) — warmer than Bordertown's yearly average — with low rainfall (21 mm), so conditions are generally comfortable for sightseeing and outdoor plans.

See Bordertown's complete weather history All 12 months side by side, 1981–2025 records, annual trends and long-term averages in one place. View full history →

Bordertown Weather in January — In Depth

☀️ January climate overview

January is one of the warmer months of the year in Bordertown, with average highs near 30.9°C and lows around 14.1°C (mean 22.5°C). It is one of the drier months, averaging 21 mm of rainfall and 47% relative humidity across the period.

🌧️ Rain, humidity & wind in January

January averages 21 mm of rainfall in Bordertown, one of the drier months compared with the rest of the year. The wettest January on record saw 73 mm (2007), and the driest just 2 mm (2009). Humidity sits around 47% and average wind speed is 3.8 m/s, with solar radiation averaging 7.6 kWh/m²/day.

📈 How January has changed

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 1.3°C. Daytime highs moved from 30.6°C to 31.8°C and overnight lows from 13.7°C to 15.2°C over the same span.
January Weather in Bordertown, Year by Year
🔥 warmest❄️ coldest🌧️ wettest
YearAvg HighAvg TempAvg LowHottest DayColdest DayRainfallHumidityWindSolar
202532.8°C24.3°C15.8°C41.2°C10.7°C5 mm42%3.6 m/s7.9
202430.6°C22.8°C14.9°C38.6°C11.4°C64 mm55%3.6 m/s7.4
202331.6°C22.9°C14.2°C40.7°C10.4°C14 mm48%3.5 m/s8.1
202233.3°C25.4°C17.4°C39.8°C12.1°C30 mm48%3.8 m/s7.3
202130.5°C22.1°C13.8°C42.2°C10.0°C38 mm49%3.7 m/s7.8
202030.7°C22.4°C14.1°C43.0°C9.7°C20 mm46%3.7 m/s7.5
201934.5°C25.2°C15.8°C45.4°C10.5°C3 mm40%3.6 m/s8.1
201833.3°C24.6°C15.9°C44.4°C10.8°C2 mm41%3.7 m/s7.7
201731.7°C23.1°C14.6°C40.5°C10.5°C6 mm46%3.7 m/s7.7
201631.5°C23.6°C15.6°C40.1°C11.1°C31 mm46%3.5 m/s7.4
201529.5°C22.0°C14.4°C43.2°C9.2°C49 mm52%4 m/s7
201433.2°C24.4°C15.6°C45.5°C8.3°C19 mm41%3.9 m/s7.9
201331.2°C22.5°C13.7°C45.0°C9.5°C9 mm43%3.9 m/s8.1
201232.0°C23.9°C15.8°C42.5°C9.7°C10 mm43%4.3 m/s7.9
201129.9°C21.9°C13.9°C40.9°C9.3°C66 mm57%3.1 m/s7.6
201031.2°C22.5°C13.7°C43.9°C10.1°C14 mm44%3.6 m/s8
200931.7°C22.7°C13.8°C45.4°C7.0°C2 mm43%3.5 m/s8.5
200831.6°C22.9°C14.1°C42.5°C9.6°C12 mm47%3.8 m/s8.2
2007 🌧️30.4°C22.8°C15.1°C41.1°C10.4°C73 mm53%3.9 m/s7.4
200632.7°C24.0°C15.4°C43.1°C9.8°C31 mm46%3.7 m/s7.5
200530.4°C22.0°C13.7°C43.3°C8.3°C14 mm49%3.8 m/s7.7
2004 ❄️25.8°C18.5°C11.2°C38.5°C6.9°C17 mm56%3.8 m/s7.3
200331.9°C22.8°C13.7°C45.8°C7.9°C21 mm44%4 m/s7.6
200228.1°C20.1°C12.1°C38.4°C7.6°C21 mm53%3.6 m/s6.9
2001 🔥35.2°C26.0°C16.8°C43.8°C10.6°C8 mm41%3.7 m/s7.4
200029.6°C21.9°C14.1°C41.2°C8.1°C5 mm47%4 m/s7.5
199934.4°C25.0°C15.6°C43.1°C10.5°C6 mm43%3.8 m/s7.9
199830.6°C22.3°C14.0°C43.5°C9.5°C17 mm50%3.8 m/s7.5
199731.8°C23.0°C14.2°C42.5°C9.6°C28 mm43%3.9 m/s7.6
199629.5°C21.4°C13.2°C42.3°C9.9°C19 mm50%4.1 m/s7.8
199531.2°C23.0°C14.7°C39.2°C9.1°C34 mm47%3.6 m/s7.5
199427.0°C19.5°C12.0°C41.7°C7.2°C30 mm52%4.2 m/s7.2
199330.3°C22.2°C14.1°C40.7°C8.7°C32 mm55%3.4 m/s7.3
199227.4°C19.5°C11.6°C39.0°C7.7°C4 mm52%4.1 m/s7.5
199130.7°C22.6°C14.6°C43.3°C9.4°C31 mm51%3.9 m/s7.4
199030.3°C22.0°C13.7°C40.4°C8.0°C19 mm46%4.1 m/s7.7
198930.2°C22.1°C14.1°C40.3°C8.5°C9 mm44%4.2 m/s7.8
198831.5°C23.0°C14.4°C42.2°C10.2°C13 mm46%3.6 m/s7.6
198726.9°C19.0°C11.1°C38.6°C6.9°C10 mm52%3.9 m/s7.6
198628.9°C20.3°C11.6°C40.6°C9.0°C9 mm48%3.9 m/s8.2
198529.9°C21.4°C12.8°C42.9°C8.4°C7 mm47%3.9 m/s7.6
198427.7°C20.0°C12.2°C36.2°C8.9°C18 mm54%3.9 m/s7.4
198329.2°C20.7°C12.1°C43.3°C7.9°C14 mm44%3.9 m/s—
198231.9°C23.5°C15.1°C45.7°C9.9°C23 mm45%4 m/s—
198134.4°C25.3°C16.2°C42.6°C10.7°C36 mm40%4 m/s—

Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.

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Bordertown January Weather — FAQ

What is the average temperature in Bordertown in January?▼

The average high in January is around 30.9°C with lows near 14.1°C (mean 22.5°C), based on 45 years of NASA POWER data.

Does it rain a lot in Bordertown in January?▼

January averages 21 mm of rainfall in Bordertown, one of the drier months. The wettest on record was 73 mm in 2007.

What was the hottest January on record in Bordertown?▼

The hottest January reached 45.8°C in 2003. The coldest dipped to 6.9°C in 1987.

Has January in Bordertown gotten warmer over time?▼

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 1.3°C. Daytime highs moved from 30.6°C to 31.8°C and overnight lows from 13.7°C to 15.2°C over the same span.

Is January a good time to visit Bordertown?▼

January is one of the warmer months of the year in Bordertown and one of the drier months, so plan for around 30.9°C daytime highs and 14.1°C at night.

Is January the coldest month in Bordertown?▼

Not quite — January is the 12th coolest month in Bordertown, averaging 22.5°C.

What should I pack for Bordertown in January?▼

For January in Bordertown, pack light, breathable clothing and sun protection, with typical highs of 30.9°C and lows of 14.1°C.

Is Bordertown humid in January?▼

Relative humidity in January averages 47% — relatively dry.

How windy is Bordertown in January?▼

Average wind speed in January is 3.8 m/s. The windiest January on record averaged 4.3 m/s (2012).

Which January had the most rainfall in Bordertown?▼

The wettest January on record was 2007 with 73 mm. On average, January sees 21 mm.

Where does this January weather data come from?▼

All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.

Other South Australia cities

Explore how the weather in Bordertown behaves each January, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for January specifically, along with year-by-year records and how the month has changed over the decades.